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| 黄河三角洲海上风场再分析资料对比 |
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杨宏达1,2, 乔璐璐1,2, 李广雪1,2, 李珏1,2, 缪红兵1,2
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1.中国海洋大学海洋地球科学学院, 山东 青岛 266100;2.海底科学与探测技术教育部重点实验室, 山东 青岛 266100
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| 摘要: |
| 再分析风场资料在海洋气象的研究中得到广泛应用。本文基于黄河口区域孤东59井验潮站和桩西106验潮站现场观测资料，对CCMP （cross-calibrated multi-platform）、CFSR （climate forecast system reanalysis）、ERA-interim、JRA-55 4种再分析资料的近地面10 m高度风场在黄河口区域的适用性进行对比分析。结果表明CCMP风场数据的平均相对误差和均方根误差最小，与实测数据的相关系数最大，能够较好反映黄河三角洲海域海上风场特征。同时，CCMP风场也能较好反映该海域的强风过程，其中冬季拟合程度比夏季好。基于CCMP风场资料，1988—2018年黄河三角洲海上风场多年平均风速为5.33 m/s，其中1988—2009年，冬、夏季及全年风速均呈上升趋势；而自2010年后，夏季风速上升速度加快，冬季由于8 m/s以下风速减弱的影响而呈逐年减小趋势，年平均风速也在冬季风控制下呈现降低趋势。 |
| 关键词: 黄河三角洲 风场再分析资料 对比 长期变化 |
| DOI：10.11759/hykx20200720004 |
| 分类号:P731 |
| 基金项目:国家重点研发计划项目（2016YFA0600903，2017YFE0133500）；国家自然科学基金（41476030）；泰山学者建设工程专项项目 |
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| Comparison of reanalysis wind field off the Yellow River Delta |
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YANG Hong-da1,2, QIAO Lu-lu1,2, LI Guang-xue1,2, LI Jue1,2, MIAO Hong-bing1,2
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1.College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;2.The Key Lab of Sea Floor Resource and Exploration Technique, Ministry of Education, Qingdao 266100, China
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| Abstract: |
| In marine meteorology,the reanalysis of wind field data has been widely used.The applicability of the 10 m height average wind field of CCMP,CFSR,ERA-interim,and JRA-55 reanalysis data in the Yellow River delta area is investigated using the field observation data of Gudong 59 well and Zhuangxi 106 tide gauge stations.Results show that the average relative error and root mean square error in the CCMP wind field data are the lowest,whereas the correlation coefficient with the measured data is the greatest.Therefore,the CCMP wind can more accurately reflect the characteristics of the offshore wind field in the Yellow River Delta and surrounding area.Furthermore,the CCMP wind field can best reflect the strong wind process in the study area,particularly in winter than in summer.According to the CCMP wind field data,the multiyear average wind speed of the offshore wind field in the Yellow River Delta from 1988 to 2018 was 5.33 m/s,with the wind speed increasing in winter,summer,and the entire year from 1988 to 2009.Since 2010,the increasing wind speed has accelerated in summer,whereas it has decreased in winter due to the weakening of wind speed to less than 8 m/s.Under the control of winter wind,the annual average wind speed also showed a downward trend. |
| Key words: Yellow River Delta reanalysis wind field comparison long-term variation |